Hello Everybody,
i am using google piechart under YUI tab and it is not working.
nothing gets displayed while the same code runs well if executed
seperately. i am stuck on it why is it happening.
in order to resolve any loading issue i have wired tab index change
event to a handler which again sends request to the datasource and
generate all the data. but still it is not working.
Code:
google.load("visualization", "1", {packages:["corechart"]});
google.setOnLoadCallback(drawChart);
function drawChart() {
var chart_callback = {
success: function(o){
try{
var rtn_obj = YAHOO.lang.JSON.parse(o.responseText);
}catch(e){
alert("JSON parse error");
return;
}
var data = new google.visualization.DataTable();
data.addColumn('string', 'empname');
data.addColumn('number', 'count');
var arr = rtn_obj.data_arr;
var chart_arr = Array();
var rowarr = Array();
for(i=0;i<arr.length;i++){
rowarr.push(arr[i].empname);
rowarr.push(parseInt(arr[i].count, 10));
chart_arr.push(rowarr);
rowarr = Array();
}
data.addRows(chart_arr);
var chart = new
google.visualization.PieChart(document.getElementById('plcmt_chart_div'));
chart.draw(data, {width: 450, height: 300, title: 'Students
Placed With Various Employers'});
},
failure: function(o){
alert(o.statusText);
}
};
YAHOO.util.Connect.asyncRequest("POST","campusage.php?do=ppc",
chart_callback, "");
}
YAHOO.campusage.placmtcharttab.indexchange = function(e){
if(e.newValue == 2){
document.getElementById("plcmt_chart_div").style.display =
"block";
drawChart();
}
};
please help me.
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